Datasheet > EL6255

EL6255

更新时间： 2024-11-19 22:49:11

品牌	Logo	应用领域
ELANTEC		振荡器驱动器二极管激光二极管
页数	文件大小	规格书
2页	137K
描述
4-Channel Laser Diode Driver + Oscillator

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EL6255 数据手册

EL6255C - Product Brief

4-Channel Laser Diode Driver + Oscillator

Features

General Description

• Shrink-small package outline

The EL6255C is a high-performance four channel laser diode current

amplifier that provides controlled current to a grounded laser diode.

The four amplifiers can provide up to 150 mA per channel of DC or

pulsed current. Channels 2, 3, and 4 must be used as the write chan-

nels, with switching speeds of one nanosecond rise/fall time. All four

channels are summed together at the I_OUToutput, allowing the user to

create multilevel waveforms in order to optimize laser diode perfor-

mance. The level of the output current is set by an analog voltage

applied to an external resistor which converts the voltage into a current

at the I_INpin (virtually ground). The current seen at this pin is then

• Voltage-controlled output current

source to 150 mA per channel,

requiring one external set resistor

per channel

• Current-controlled output current

source to 150 mA per channel

• Rise time = 1.0 ns

• Fall time = 1.1 ns

• On chip oscillator with frequency

and amplitude control by use of

external resistors to ground

amplified by 100X to become a current source at pin I_OUT

An on-chip 500 MHz oscillator is provided to allow current modula-

tion when in the read mode. This is turned on when the OSCEN pin is

held high (floating not recommended). Complete control of amplitude

and frequency is set by two external resistors connected to ground at

pins RFREQ and RAMP (see graphs in this data sheet for further

explanation). The oscillator will also turn off whenever any of the

OUTEN pins for channels 2, 3, and 4 (the write channels) are low (see

truth table).

• Oscillator to 500 MHz

• Oscillator to 100 mA pk/pk

• Single +5V supply (±10%)

• Current amplification = 100

• Disable feature for power-up

protection and power savings

• TTL/CMOS control signals

Output current pulses are enabled when an ‘L’ signal is applied to the

OUTEN pins. No output current flows when OUTEN is ‘H’, and addi-

tional laser diode protection is provided since the OUTEN input will

float high when open. Complete I_OUTshut-off is also achieved by

holding the ENABLE pin low, which will override the OUTEN con-

trol pins.

Applications

• DVD drives

• CD-RW applications

• Writable optical drives

• Laser diode current switching

Connection Diagram

Ordering Information

Part No

Temp. Range

Package

Outline #

EL6255CU

0°C to +70°C

QSOP-16

MDP0040

IINR

IIN2

VCC

RFREQ

IIN3

14 IOUT

13 GND

IIN4

12 RAMP

11 ENABLE

10 OSCEN

OUTEN2

OUTEN3

OUTEN4

VCC

Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these

specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.

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与EL6255相关器件

型号	品牌	获取价格	描述	数据表
EL6255C	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator
EL6255CU	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator
EL6257	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator
EL6257C	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator
EL6257CU	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator
E-L6258	STMICROELECTRONICS	获取价格	PWM控制的大电流DMOS通用电机驱动器
EL6258C	ELANTEC	获取价格	3-Channel Laser Driver + Oscillator + APC Amplifier
EL6258CU	ELANTEC	获取价格	3-Channel Laser Driver + Oscillator + APC Amplifier
E-L6258E	STMICROELECTRONICS	获取价格	PWM控制的大电流DMOS通用电机驱动器
E-L6258EA	STMICROELECTRONICS	获取价格	PWM controlled high current DMOS universal motor driver

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